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International Scholarly Research Notices
Table of Contents
International Scholarly Research Notices
/
2013
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Article
/
Tab 3
/
Research Article
Simple and Sensitive Methods for the Determination of 2-(4′-Chloromethyl phenyl) Benzonitrile and 2-(4′-Bromomethyl phenyl) Benzonitrile Contents in Valsartan Drug Substance by Gas Chromatography
Table 3
Precision results of 2-CMPB and 2-BMPB.
2-CMPB
2-BMPB
S. no.
System precision
(area ratio)
Method precision (µg/g)
Ruggedness (µg/g)
System precision (area ratio)
Method precision (µg/g)
1
1.318
5.28
4.82
0.785
4.96
2
1.331
5.31
4.87
0.789
4.46
3
1.309
5.28
5.09
0.779
4.63
4
1.334
5.30
5.08
0.762
4.38
5
1.312
5.24
4.95
0.778
4.67
6
1.306
5.25
4.96
0.783
4.40
Avg.
1.318
5.28
4.96
0.779
4.58
SD
0.01
0.03
0.11
0.01
0.220
% RSD
0.9
0.5
2.2
1.2
4.8